[PATCH] Serial: Add uart_insert_char()
Add uart_insert_char(), which handles inserting characters into the
flip buffer. This helper function handles the correct semantics
for handling overrun in addition to inserting normal characters.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 0d93586..3bbf0cc 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -1122,18 +1122,9 @@
}
if (uart_handle_sysrq_char(&up->port, ch, regs))
goto ignore_char;
- if ((lsr & up->port.ignore_status_mask) == 0) {
- tty_insert_flip_char(tty, ch, flag);
- }
- if ((lsr & UART_LSR_OE) &&
- tty->flip.count < TTY_FLIPBUF_SIZE) {
- /*
- * Overrun is special, since it's reported
- * immediately, and doesn't affect the current
- * character.
- */
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- }
+
+ uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag);
+
ignore_char:
lsr = serial_inp(up, UART_LSR);
} while ((lsr & UART_LSR_DR) && (max_count-- > 0));